UGC NET June 2012 Paper 3 Questions and Solutions for Computer Science

# Recent questions tagged ugcnetjune2012iii

1
Halftoning is defined as A technique to obtain increased visual resolution using multiple intensity levels A technique for using minimum number of intensity levels to obtain increased visual resolution A technique to obtain increased visual resolution using maximum number of intensity levels A technique for using appropriate number intensity levels to obtain increased visual resolution
2
On a disk with 1000 cylinders (0 to 999) find the number of tracks, the disk arm must move to satisfy all the requests in the disk queue. Assume the last request service was at track 345 and the head is moving toward track 0. The queue in FIFO order contains requests for the following tracks: 123, 874, 692, 475, 105, 376 (Assume scan algorithm) 2013 1219 1967 1507
3
In which file the compiler manage various objects, which are used in windows programming? Control File Binary File Text File Obj File
4
G1 and G2 are two graphs as shown: Both G1 and G2 are planar graphs Both G1 and G2 are not planar graphs G1 is planar and G2 is not planar G1 is not planar and G2 is planar
5
Which one of the following is not a shell in UNIX system? Bourne Shell C Shell Not Shell Korn Shell
6
Assume that we have constructor functions for both base class and derived class. Now consider the declaration in main() Base *P=New Derived; In what sequence will the constructor be called? Derived class constructor followed by Base class constructor Base class constructor followed by Derived class constructor Base class constructor will not be called Derived class constructor will not be called
7
What is the meaning of ‘Hibernate’ in WindowsXP/Windows 7? Restart the computers in safe mode Restart the computers in normal mode Shutdown the computer terminating all the running applications Shutdown the computer without closing the running applications
8
HTML is defined using SGML – an _____ standard, information processing-text and office systems (SGML) for text information processing. ISO-8878 ISO-8879 ISO-8880 ISO-8881
9
Let a*H and b*H be two cosets of H. Either a*H and b*H are disjoint a*H and b*H are identical Then, Only I is true Only II is true I or II is true I and II is false
10
If the period of a signal is 1000 ms, then what is its frequency in kiliohertz? $10^{-3}$ KHz $10^{-2}$ KHz $10^{-1}$ KHz 1 KHz
1 vote
11
Consider the methods used by processes $P_1$ and $P_2$ for accessing their critical sections. The initial values of shared Boolean variables $S_1$ and $S_2$ are randomly assigned, $P_1$ while ($S_1$==$S_2$); critical section $S_1$ ... properties achieved? Mutual exclusion but not progress Progress but not mutual exclusion Neither mutual exclusion nor progress Both mutual exclusion and progress
1 vote
12
Match the following with link quality measurement and handoff initiation: (a) Networked-Controlled Handoff (NCHO) (i) MS connect to BS (b) Mobile-Assisted Handoff (MAHO) (ii) process via channel target the BS (c) Forward Handoff (iii) First generation analog cellular system (d) Hard Handoff (iv) Second ... )} \\ \text{D} & \text{(iv)} & \text{(iii)} & \text{(i)} & \text{(ii)} \end{array}
13
If a and b are the end points of a line, then which of the following is true? If both end points are left, right, above or below the window, the line is invisible. If both end points are left, right, above or below the window, the line is completely ... or below the window, the line is trivially visible If both end points are left, right, above or below the window, the line is trivially invisible
14
The optimal solution of the following assignment problem using Hungarian method is I II III IV A 8 26 17 11 B 13 28 4 26 C 38 19 18 15 D 19 26 24 10 ... A B C D A I II III IV B I III II IV C I III IV II D I IV II III
1 vote
15
The perspective projection matrix, on the view plan z=d where the centre of projection is the origin (0, 0, 0) shall be $\begin{bmatrix} 0 & 0 & 0 & d \\ 0 & 0 & d & 0 \\ 0 & d & 0 & 0 \\ d & 0 & 0 & 1 \end{bmatrix}$ ... $\begin{bmatrix} d & 0 & 0 & 0 \\ 0 & d & 0 & 0 \\ 0 & 0 & d & 0 \\ 0 & 0 & 0 & 1 \end{bmatrix}$
16
____ is sometimes said to be object oriented, because the only way to manipulate kernel objects is by invoking methods on their handles. Windows NT Windows XP Windows VISTA Windows 95/98
17
Match the following with respect to java.util.* class methods: (a) Bit Set (i) Time zone getTimezone() (b) Calendar (ii) int hashcode() (c) Time zone (iii) int nextInt() (d) Random (iv) Void SetID(String tzName) ... (d) A (ii) (i) (iv) (iii) B (iii) (iv) (i) (ii) C (iv) (iii) (ii) (i) D (ii) (i) (iii) (iv)
18
What is the size (in terms of bits) of Header length field in IPV4 header? 2 4 8 16
19
Consider the below circuit and find the output function f(x, y, z) $x \bar{z} + xy + \bar{y}z$ $x \bar{z} + xy + \bar{y} \bar{z}$ $xz + xy + \bar{y} \bar{z}$ $xz + x \bar{y} + \bar{y}z$
20
Match the following: (i) Regular grammar (a) Pushdown automaton (ii) Context free grammar (b) Linear bounded automaton (iii) Unrestricted grammar (c) Deterministic finite automaton (iv) Context sensitive grammar (d) Turing machine \begin{array} {|l||l|l|l|}\hline\text{(i)}& \text{Regular grammer} & \text{(a) ... {(a)} &\text{(d)}\\\text{D} & \text{(c)}&\text{(b)} &\text{(d)}&\text{(a)} \end{array}
21
The strategy used to reduce the number of tree branches and the number of static evaluations applied in case of a game tree is Minmax strategy Alpha-beta pruning strategy Constraint satisfaction strategy Static max strategy
22
How many relations are there on a set with n elements that are symmetric and a set with n elements that are reflexive and symmetric? $2^{n(n+1)/2} \text{ and } 2^n.3^{n(n-1)/2}$ $3^{n(n-1)/2} \text{ and } 2^{n(n-1)}$ $2^{n(n+1)/2} \text{ and } 3^{n(n-1)/2}$ $2^{n(n+1)/2} \text{ and } 2^{n(n-1)/2}$
23
In any simplex table, if corresponding to any negative $\Delta$ j, all elements of the column are negative or zero, the solution under the test is degenerate solution unbounded solution alternative solution non-existing solution
24
The colour of an object is largely determined by its diffuse reflection coefficient. If $K_d = (0.8, 0.4, 0)$, then what shall be the colour of the object, of the light used is blue and magenta? White and Red Red and Blue Black and White Black and Red
25
The feasible region represented by the constraints $x_1 - x_2 \leq 1, x_1 + x_2 \geq 3, x_1 \geq 0, x_2 \geq 0$ of the objective function Max $Z=3x_1 + 2x_2$ is A polygon Unbounded feasible region A point None of these
1 vote
26
Which diagram provides a formal graphic notation for modelling objects, classes and their relationships to one another? Object diagram Class diagram Instance diagram Analysis diagram
27
The regular expression for the following DFA ab*(b+aa*b)* a*b(b+aa*b)* a*b(b*+aa*b) a*b(b+aa*b)*
The following CFG $S \rightarrow aB \mid bA, A \rightarrow a \mid as \mid bAA, B \rightarrow b \mid bs \mid aBB$ generates strings of terminals that have odd number of a’s and odd number of b’s even number of a’s and even number of b’s equal number of a’s and b’s not equal number of a’s and b’s